Double Lover by François Ozon

Chloé, who works as a guard at a museum in Paris, seeks to shore up her resiliency and enters psychoanalysis. In Paul Meyer, the sensitive patient finds a caring psychiatrist who helps her overcome bouts with depression. Following the end of the treatment, both realize that they have fallen in love. A new chapter begins for Chloé when she and Paul move in together. Chloé soon comes to believe that Paul is keeping a secret. She impulsively visits another psychiatrist, Louis Delord. Spiraling emotional and sexual stakes will push all three of them to extremes, forcing Chloé to take action in order to solve a mystery and save herself.